CN105836994A - Intermediate-enhanced sludge digestion process - Google Patents
Intermediate-enhanced sludge digestion process Download PDFInfo
- Publication number
- CN105836994A CN105836994A CN201610355208.4A CN201610355208A CN105836994A CN 105836994 A CN105836994 A CN 105836994A CN 201610355208 A CN201610355208 A CN 201610355208A CN 105836994 A CN105836994 A CN 105836994A
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- China
- Prior art keywords
- mud
- strengthening
- sludge digestion
- intensive treatment
- sludge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000029087 digestion Effects 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000010802 sludge Substances 0.000 title claims abstract description 23
- 239000002253 acid Substances 0.000 claims abstract description 5
- 102000004190 Enzymes Human genes 0.000 claims abstract description 3
- 108090000790 Enzymes Proteins 0.000 claims abstract description 3
- 238000005728 strengthening Methods 0.000 claims description 24
- 230000005855 radiation Effects 0.000 claims description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- 239000011707 mineral Substances 0.000 claims description 3
- 150000007529 inorganic bases Chemical class 0.000 claims description 2
- 239000003814 drug Substances 0.000 abstract description 4
- 239000003513 alkali Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000002604 ultrasonography Methods 0.000 abstract description 2
- 230000000593 degrading effect Effects 0.000 abstract 1
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 3
- 238000002306 biochemical method Methods 0.000 description 2
- 210000002421 cell wall Anatomy 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Molecular Biology (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses an intermediate-enhanced sludge digestion process which comprises the following steps: firstly removing organic matters easy to biochemically treat by adopting an ordinary anaerobic digestion process; then degrading organic matters difficult to biochemically treat into organic matters easy to biochemically treat by adopting enhancing methods like acid adding, alkali adding, enzyme adding, heating and ultrasound adding; finally performing anaerobic digestion. Compared with an existing pretreatment process, the intermediate enhanced sludge digestion process disclosed by the invention is less in medicine invested, low in energy consumption and good in sludge reduction effect.
Description
Technical field
The present invention relates to a kind of sludge digestion system, particularly relate to the mud of strengthening in the middle of a kind of and disappear
Change system.
Background technology
Sludge digestion is a kind of ancient technique, and initial purpose is to make sludge stabilization.Make
With conventional biochemical method, the Organic substance reduction rate brought of sludge digestion, substantially follow Moshi curve.
In order to obtain more Organic substance reduction rate and obtain more biogas, people begin to use various method
Mud is carried out pretreatment, such as: acid adding, add alkali, enzyme-added, heat, add microwave, add ultrasound wave,
The use of these preprocessing means, while bringing methane quantity to increase, also makes processing cost significantly raise.
We think after being analyzed mud: mud the most easily digests, it is also difficult to digestion.
So-called easily digestion, is to have adsorbed the most biochemical a large amount of material in EPS, biochemical reaction easily occurs；
What is called is difficult to digest, and is after aforementioned substances consumption finishes, and remaining is all biological cell wall, these
Material is difficult to digested degraded.Why to carry out pretreatment with the means of strength, it is simply that in order to break
Break up cell wall.But current preprocess method, is to process whole mud, it is clear that one
Shortcoming is: the most digestible material, or heavy material, all can consume medicine, consumption
Energy.If in advance with the biochemical method of low cost, removing digestible material, remaining difficulty disappeared
Compound matter, then process by the means of strength, its medicine, the consumption of energy, it is bound to reduce.
The thinking of this this patent just.
Summary of the invention
The technical problem to be solved is to provide the sludge digestion work of strengthening in the middle of a kind of
Skill, it is characterised in that comprise the following steps:
Step one, just digestion: mud is put in first digester and carry out anaerobic digestion；
Step 2, strengthening: first postdigestive mud is put into strengthening pond, and at strengthening Chi Zhongjin
Row intensive treatment；
Step 3, adjusts: the mud after intensive treatment is put into adjustment pond, and adjusting pH is 7
Left and right；
Step 4, then digest: the mud after adjusting puts into digester again, digests；
Step 5, spoil disposal: discharge mud from digester again, carry out subsequent treatment；
Step 6, repeats step one to step 6；
As preferably, described intensive treatment, for adding mineral acid, makes pH ＜ 4；
As preferably, described intensive treatment, for adding inorganic base, makes pH ＞ 10；
As preferably, described intensive treatment is for adding enzyme；
As preferably, described intensive treatment for mud is heated, heating-up temperature ＞ 90 DEG C；
As preferably, described intensive treatment is for carry out ultrasonic radiation to mud；
As preferably, described intensive treatment is for carry out microwave radiation to mud；
As preferably, described digestion again is: the mud after adjusting puts back to just digester, described
Spoil disposal is: carry out subsequent treatment from adjusting discharge partial sludge pond.
Compared with existing pretreating process, a kind of in the middle of sludge digestion technique useful of strengthening
Effect is: its medicine, energy consumption few, mud decrement is effective.
Accompanying drawing explanation
Fig. 1 is the technique stream of the sludge digestion technique of a kind of middle strengthening of the embodiment of the present invention one
Journey schematic diagram.
Detailed description of the invention
Describe embodiments of the invention below in conjunction with the accompanying drawings in detail.
Embodiment one:
The sludge digestion process system of strengthening in the middle of as shown in Figure 1 a kind of, including mud storage pool 1,
Just digester 2, strengthening pond 3, adjust pond 4 and digester 5 again.
With reference to Fig. 1, the operation method of the present embodiment comprises the following steps:
Step one, just digestion: the mud in mud storage pool 1 is put in first digester 2 and detest
Oxygen digests；
Step 2, strengthening: first postdigestive mud is put into strengthening pond 3, and in strengthening pond 3
In carry out intensive treatment；The method of the intensive treatment of the present embodiment is to add mineral acid, makes pH ＜ 2 and protects
Hold 24 hours；
Step 3, adjusts: the mud after intensive treatment is put into adjustment pond 4, adds alkali and adjusts pH
It is about 7；
Step 4, then digest: the mud after adjusting puts into digester 5 again, digests；
Step 5, spoil disposal: discharge mud from digester 5 again, carry out subsequent treatment；
Step 6, repeats step one to step 6；
Above example is only the exemplary embodiment of the present invention, is not used in the restriction present invention, this
The protection domain of invention is defined by the claims.Those skilled in the art can be in the essence of the present invention
With in protection domain, the present invention is made various amendment or equivalent, this amendment or equivalent
Also should be regarded as being within the scope of the present invention.
Claims (8)
1. the sludge digestion technique of a middle strengthening, it is characterised in that comprise the following steps:
Step one, just digestion: mud is put in first digester and carry out anaerobic digestion；
Step 2, strengthening: first postdigestive mud is put into strengthening pond, and carries out intensive treatment in strengthening pond；
Step 3, adjusts: the mud after intensive treatment is put into adjustment pond, and adjusting pH is about 7；
Step 4, then digest: the mud after adjusting puts into digester again, digests；
Step 5, spoil disposal: discharge mud from digester again, carry out subsequent treatment；
Step 6, repeats step one to step 6.
The sludge digestion technique of a kind of middle strengthening the most according to claim 1, it is characterised in that: described intensive treatment, for adding mineral acid, makes pH ＜ 4.
The sludge digestion technique of a kind of middle strengthening the most according to claim 1, it is characterised in that: described intensive treatment, for adding inorganic base, makes pH ＞ 10.
The sludge digestion technique of a kind of middle strengthening the most according to claim 1, it is characterised in that: described intensive treatment is for adding enzyme.
The most according to claim 1 a kind of in the middle of strengthening sludge digestion technique, it is characterised in that: described intensive treatment for mud is heated, heating-up temperature ＞ 90 DEG C.
The sludge digestion technique of a kind of middle strengthening the most according to claim 1, it is characterised in that: described intensive treatment is for carry out ultrasonic radiation to mud.
The sludge digestion technique of a kind of middle strengthening the most according to claim 1, it is characterised in that: described intensive treatment is for carry out microwave radiation to mud.
The sludge digestion technique of a kind of middle strengthening the most according to claim 1, it is characterised in that described digestion again is: the mud after adjusting puts back to just digester, and described spoil disposal is: discharges partial sludge from adjustment pond and carries out subsequent treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610355208.4A CN105836994B (en) | 2016-05-27 | 2016-05-27 | Intermediate-intensified sludge digestion process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610355208.4A CN105836994B (en) | 2016-05-27 | 2016-05-27 | Intermediate-intensified sludge digestion process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105836994A true CN105836994A (en) | 2016-08-10 |
| CN105836994B CN105836994B (en) | 2021-01-26 |
Family
ID=56594436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610355208.4A Expired - Fee Related CN105836994B (en) | 2016-05-27 | 2016-05-27 | Intermediate-intensified sludge digestion process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105836994B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108558158A (en) * | 2017-12-20 | 2018-09-21 | 同济大学 | A kind of bioremediation improving anaerobic digestion product dehydration property |
| CN108557997A (en) * | 2018-04-04 | 2018-09-21 | 大连理工大学 | A kind of preparation of sludge lysate and its application in high-salt wastewater Anaerobic Treatment |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1765780A (en) * | 2005-09-14 | 2006-05-03 | 北京天地人环保科技有限公司 | Method for sludge reduction using ultrasonic treatment |
| WO2010002885A2 (en) * | 2008-06-30 | 2010-01-07 | Spiralcat Of Maryland | Method and system for harvesting water, energy, and biofuel |
| CN102557375A (en) * | 2012-03-19 | 2012-07-11 | 同济大学 | Two-phase return microwave-assisted anaerobic digestion method for sludge |
| CN102583933A (en) * | 2012-03-19 | 2012-07-18 | 盐城同济环科固体废物处理处置有限公司 | Multi-cycle multistage anaerobic digestion system and application thereof |
| CN102583931A (en) * | 2012-03-19 | 2012-07-18 | 盐城同济环科固体废物处理处置有限公司 | Dual-circulation two-grade anaerobic digestion system and application thereof |
| CN102583922A (en) * | 2012-03-19 | 2012-07-18 | 盐城同济环科固体废物处理处置有限公司 | Double-circulation two-phase anaerobic digestion system and application thereof |
| CN102583932A (en) * | 2012-03-19 | 2012-07-18 | 同济大学 | Method for generating methane by enhancing anaerobic digestion of reflux sludge after heat and alkaoline combined treatment and circulation |
| CN102603136A (en) * | 2012-03-19 | 2012-07-25 | 同济大学 | Method for producing methane through jointly opsonizing sludge by microwave and heat to improve anaerobic fermentation of low organic sludge |
| CN102603135A (en) * | 2012-03-19 | 2012-07-25 | 同济大学 | Method for producing biogas by aid of intensified anaerobic fermentation of circular backflow sludge in microwave and alkali combined treatment |
| CN103757062A (en) * | 2014-01-10 | 2014-04-30 | 同济大学 | Method for promoting anaerobic fermentation acid production of excess sludge through surfactin |
| CN105036500A (en) * | 2015-07-28 | 2015-11-11 | 同济大学 | Method for improving anaerobic digestion efficiency of organic wastes and content of methane in biogas |
-
2016
- 2016-05-27 CN CN201610355208.4A patent/CN105836994B/en not_active Expired - Fee Related
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1765780A (en) * | 2005-09-14 | 2006-05-03 | 北京天地人环保科技有限公司 | Method for sludge reduction using ultrasonic treatment |
| WO2010002885A2 (en) * | 2008-06-30 | 2010-01-07 | Spiralcat Of Maryland | Method and system for harvesting water, energy, and biofuel |
| CN102557375A (en) * | 2012-03-19 | 2012-07-11 | 同济大学 | Two-phase return microwave-assisted anaerobic digestion method for sludge |
| CN102583933A (en) * | 2012-03-19 | 2012-07-18 | 盐城同济环科固体废物处理处置有限公司 | Multi-cycle multistage anaerobic digestion system and application thereof |
| CN102583931A (en) * | 2012-03-19 | 2012-07-18 | 盐城同济环科固体废物处理处置有限公司 | Dual-circulation two-grade anaerobic digestion system and application thereof |
| CN102583922A (en) * | 2012-03-19 | 2012-07-18 | 盐城同济环科固体废物处理处置有限公司 | Double-circulation two-phase anaerobic digestion system and application thereof |
| CN102583932A (en) * | 2012-03-19 | 2012-07-18 | 同济大学 | Method for generating methane by enhancing anaerobic digestion of reflux sludge after heat and alkaoline combined treatment and circulation |
| CN102603136A (en) * | 2012-03-19 | 2012-07-25 | 同济大学 | Method for producing methane through jointly opsonizing sludge by microwave and heat to improve anaerobic fermentation of low organic sludge |
| CN102603135A (en) * | 2012-03-19 | 2012-07-25 | 同济大学 | Method for producing biogas by aid of intensified anaerobic fermentation of circular backflow sludge in microwave and alkali combined treatment |
| CN103757062A (en) * | 2014-01-10 | 2014-04-30 | 同济大学 | Method for promoting anaerobic fermentation acid production of excess sludge through surfactin |
| CN105036500A (en) * | 2015-07-28 | 2015-11-11 | 同济大学 | Method for improving anaerobic digestion efficiency of organic wastes and content of methane in biogas |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108558158A (en) * | 2017-12-20 | 2018-09-21 | 同济大学 | A kind of bioremediation improving anaerobic digestion product dehydration property |
| CN108557997A (en) * | 2018-04-04 | 2018-09-21 | 大连理工大学 | A kind of preparation of sludge lysate and its application in high-salt wastewater Anaerobic Treatment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105836994B (en) | 2021-01-26 |
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Granted publication date: 20210126 |